WOCompountElement: the array of children was not properly allocated, leading to a buffer overflow
Fix crash when decoding a = at end of the data

In decoding a quoted printable mail. There is a buffer overflow
as we are always parsing two bytes instead of one.

See the full backtrace at:

https://gist.github.com/sixstone-qq/cb8099b66c2911e8aaf2
Merge pull request #11 from Zentyal/ejhernandez/fix-crash-decoding-quoted-printable-mail

Fix two buffer overflows